【摘要】 现今常用的地震反演技术多以地震主频控制反演结果,地震资料有效频带中的相对高频和相对低频的潜力没有充分利用,反演结果也不尽如人意。与目前的反演方法有所不同,分频反演是依靠测井和地震资料,利用支持向量机的方法研究不同探测频率下的振幅响应(AVF),并将AVF作为独立信息引入反演,建立起测井波阻抗曲线与地震波形间的非线性映射关系,充分利用地震资料中的低、中、高频带信息,减少薄层反演的不确定性,从而得到高分辨率的反演结果。模型计算和实际资料的处理证明了该方法的有效性和准确性。分频反演也是一种无子波提取、无初始模型的高分辨率非线性反演方法。更多还原

【Abstract】 Currently used seismic inversive technology mostly is the way controlled by seismic dominant frequency that makes the potential of relatively higher frequency and lower frequency in useful band without full utilization, so that the inversive results are unsatisfactory. Differing from the current inversive methods, the frequency-divided inversion is relying on logging and seismic data, u-sing the methods of support vector computer to study the amplitude response in different detective frequencies (amplitude versus frequency, simply called AVF), taking AVF as independent information of inversion and creating the non-linear mapping relationship between wave impedance curves of logging data and seismic waveforms, fully using the information of low, medium and high frequencies in seismic data to reduce the uncertainty of thin-layer inversion, so that the high-resolution inversive results could be achieved. The computation of models and real data processing showed the effectiveness and correctness of the methods. Frequency-divided inversion is also the high-resolution non-linear inversive method without wavelet detection and without initial model.更多还原